Satisfy your sandwich cravings without the carbs! This Low Carb Tuna Mayo Sandwich is a quick, no-cook meal packed with flavor and wholesome ingredients. Featuring creamy canned tuna mixed with mayo and Dijon mustard, it's perfectly seasoned with a touch of salt and black pepper for a savory kick. Instead of traditional bread, crisp lettuce leaves act as the base, creating a refreshing and gluten-free alternative. Layered with crunchy cucumber slices and, optionally, creamy avocado, this sandwich is a keto-friendly, high-protein lunch or snack that comes together in just 10 minutes. Whether you're following a low-carb diet or simply love fresh, nutritious meals, this recipe is sure to become a favorite. Perfect for busy weekdays or a light picnic bite, it’s as versatile as it is satisfying!
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Drain the canned tuna thoroughly and transfer it to a mixing bowl.
Add mayonnaise, Dijon mustard, salt, and black pepper to the bowl. Mix well until the tuna mixture is creamy and well-combined.
Wash and slice the cucumber into thin, even rounds. Additionally, slice the avocado if you're using it.
Lay two large lettuce leaves on a clean work surface. These will act as the base for the sandwich.
Spread an even layer of the tuna mixture onto the lettuce leaves.
Top the tuna layer with cucumber slices and avocado slices (if using).
Cover with another lettuce leaf to create a sandwich, or roll it for a wrap-style presentation.
Repeat the process for the second sandwich or store remaining filling in an airtight container in the fridge for up to 2 days.
Serve immediately and enjoy your low carb tuna mayo sandwich!
Serving size | (581.0g) |
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Amount per serving | % Daily Value* |
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Calories | 450.5 |
Total Fat 35.0g | 0% |
Saturated Fat 3.9g | 0% |
Polyunsaturated Fat 1.5g | |
Cholesterol 40.0mg | 0% |
Sodium 882.1mg | 0% |
Total Carbohydrate 28.4g | 0% |
Dietary Fiber 7.7g | 0% |
Total Sugars 7.5g | |
Protein 12.0g | 0% |
Vitamin D 22.7IU | 0% |
Calcium 93.2mg | 0% |
Iron 2.4mg | 0% |
Potassium 1087.6mg | 0% |
Source of Calories